Look at this!!!!! They left a piece of wire in one shotand i promise this isn't from behind the scenes footage if you watch the film and look at the spot where the wire is you shall see it flick in to shot but you have to watch closely because it is only in one frame!!

Ok.. I don't know how I noticed this, but, as Gromit tries to get to the window with the bomb, he is stopped by being hit hard with a large metal oven paddle which swings in from his front right side. When we see Piella holding it, there is a Gromit-shaped dent in it, but it is dented the wrong way, bulging outward on the side he was hit with instead of indented. Kind-of get it? Watch the movie you might notice it.